PQOTD 6/18/09

Two-fifths of the caps in a box are red, one-fourth are blue, and the rest are green. What is the ratio of the green caps to the blue caps?
 
 A.  5:8
 B.  5:7
 C.  7:8
 D.  8:7
 E.  7:5

We first need to figure out what fraction of the caps are green. If 2/5 of them are red, and 1/4 of them are blue, then we know that 13/20 are either red or blue (I’m sure you remember how to add fractions with different denominators, right!?). Therefore, 7/20 of the caps are green. The question is asking for the ratio of green to blue caps. We know that 7/20 are green, and 1/4 (or 5/20) are blue. The ratio would then be 7:5. The answer is (E).

source:  syvum.com

2 Responses

  1. Nice problem. Thanks.

  2. Thanks Nicolas. Keep coming back!

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